Visible Voices

"Sign Language" of the deaf-mutes.
What does it represent – a pantomime, more or less successfully illustrating phonetic speech? Or a separate language that has its own grammar and semantics and is in no way inferior to spoken language?
In the work "Visible Voices" – one of his most interesting works – Oliver Sacks puts forward a bold and original theory, according to which sign language is the true and original language of the brain.
However, the main value of the book consists of real stories of people with disabilities, who not only fought for a full life but also triumphed in this struggle!..